:root {
  --bg-dark: #0a0a0a;
  --bg-panel: rgba(255, 115, 0, 0.1);
  --accent: #ff6600;
  --accent-glow: 0 0 12px #ff6600cc;
  --text-main: #e6e6e6;
  --text-fade: #999;
  --font-console: "IBM Plex Mono", monospace;
}

/* Light mode variables */
body {
  --bg-dark: #f5f5f5;
  --bg-panel: rgba(255, 115, 0, 0.05);
  --accent: #ff6600;
  --accent-glow: 0 0 12px #ff6600cc;
  --text-main: #1a1a1a;
  --text-fade: #666;
}

/* Dark mode variables */
body.dark {
  --bg-dark: #0a0a0a;
  --bg-panel: rgba(255, 115, 0, 0.1);
  --accent: #ff6600;
  --accent-glow: 0 0 12px #ff6600cc;
  --text-main: #e6e6e6;
  --text-fade: #999;
}

body {
  margin: 0;
  background: var(--bg-dark);
  color: var(--text-main);
  font-family: var(--font-console);
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

#chat {
  width: 95%;
  max-width: 900px;
  height: 95vh;
  display: flex;
  flex-direction: column;
  border: 1px solid var(--accent);
  border-radius: 10px;
  box-shadow: var(--accent-glow);
  background: var(--bg-dark);
  overflow: hidden;
}

/* Header sections */
#model-select, #session-select, #status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--accent);
  background-color: rgba(255, 102, 0, 0.05);
}
#status {
  justify-content: flex-start;
  border-top: 1px solid var(--accent);
}

label, select, button {
  font-family: var(--font-console);
  font-size: 0.9rem;
  color: var(--text-main);
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 4px 8px;
}

button:hover, select:hover {
  box-shadow: 0 0 8px var(--accent);
  cursor: pointer;
}

#thinkingStreamBtn {
  background: rgba(138, 43, 226, 0.2);
  border-color: #8a2be2;
}

#thinkingStreamBtn:hover {
  box-shadow: 0 0 8px #8a2be2;
  background: rgba(138, 43, 226, 0.3);
}

/* Chat area */
#messages {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
  scroll-behavior: smooth;
}

/* Messages */
.msg {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 8px;
  line-height: 1.4;
  word-wrap: break-word;
  box-shadow: 0 0 8px rgba(255,102,0,0.2);
}
.msg.user {
  align-self: flex-end;
  background: rgba(255,102,0,0.15);
  border: 1px solid var(--accent);
}
.msg.assistant {
  align-self: flex-start;
  background: rgba(255,102,0,0.08);
  border: 1px solid rgba(255,102,0,0.5);
}
.msg.system {
  align-self: center;
  font-size: 0.8rem;
  color: var(--text-fade);
}

/* Input bar */
#input {
  display: flex;
  border-top: 1px solid var(--accent);
  background: rgba(255, 102, 0, 0.05);
  padding: 10px;
}
#userInput {
  flex: 1;
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--accent);
  border-radius: 4px;
  padding: 8px;
}
#sendBtn {
  margin-left: 8px;
}

/* Relay status dot */
#status {
  display: flex;
  align-items: center;
  margin: 10px 0;
  gap: 8px;
  font-family: monospace;
  color: #f5f5f5;
}

#status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

@keyframes pulseGreen {
  0% { box-shadow: 0 0 5px #00ff66; opacity: 0.9; }
  50% { box-shadow: 0 0 20px #00ff99; opacity: 1; }
  100% { box-shadow: 0 0 5px #00ff66; opacity: 0.9; }
}

.dot.ok {
  background: #00ff66;
  animation: pulseGreen 2s infinite ease-in-out;
}

/* Offline state stays solid red */
.dot.fail {
  background: #ff3333;
  box-shadow: 0 0 10px #ff3333;
}


/* Dropdown (session selector) styling */
select {
  background-color: var(--bg-dark);
  color: var(--text-main);
  border: 1px solid #b84a12;
  border-radius: 6px;
  padding: 4px 6px;
  font-size: 14px;
}

select option {
  background-color: var(--bg-dark);
  color: var(--text-main);
}

/* Hover/focus for better visibility */
select:focus,
select:hover {
  outline: none;
  border-color: #ff7a33;
  background-color: var(--bg-panel);
}

/* Settings Modal */
.modal {
  display: none !important;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
}

.modal.show {
  display: block !important;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
  z-index: 999;
}

.modal-content {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: linear-gradient(180deg, rgba(255,102,0,0.1) 0%, rgba(10,10,10,0.95) 100%);
  border: 2px solid var(--accent);
  border-radius: 12px;
  box-shadow: var(--accent-glow), 0 0 40px rgba(255,102,0,0.3);
  min-width: 400px;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
  z-index: 1001;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--accent);
  background: rgba(255,102,0,0.1);
}

.modal-header h3 {
  margin: 0;
  font-size: 1.2rem;
  color: var(--accent);
}

.close-btn {
  background: transparent;
  border: none;
  color: var(--accent);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}

.close-btn:hover {
  background: rgba(255,102,0,0.2);
  box-shadow: 0 0 8px var(--accent);
}

.modal-body {
  padding: 20px;
}

.settings-section h4 {
  margin: 0 0 8px 0;
  color: var(--accent);
  font-size: 1rem;
}

.settings-desc {
  margin: 0 0 16px 0;
  color: var(--text-fade);
  font-size: 0.85rem;
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.radio-label {
  display: flex;
  flex-direction: column;
  padding: 12px;
  border: 1px solid rgba(255,102,0,0.3);
  border-radius: 6px;
  background: rgba(255,102,0,0.05);
  cursor: pointer;
  transition: all 0.2s;
}

.radio-label:hover {
  border-color: var(--accent);
  background: rgba(255,102,0,0.1);
  box-shadow: 0 0 8px rgba(255,102,0,0.3);
}

.radio-label input[type="radio"] {
  margin-right: 8px;
  accent-color: var(--accent);
}

.radio-label span {
  font-weight: 500;
  margin-bottom: 4px;
}

.radio-label small {
  color: var(--text-fade);
  font-size: 0.8rem;
  margin-left: 24px;
}

.radio-label input[type="text"] {
  margin-top: 8px;
  margin-left: 24px;
  padding: 6px;
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(255,102,0,0.5);
  border-radius: 4px;
  color: var(--text-main);
  font-family: var(--font-console);
}

.radio-label input[type="text"]:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 8px rgba(255,102,0,0.3);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 16px 20px;
  border-top: 1px solid var(--accent);
  background: rgba(255,102,0,0.05);
}

.primary-btn {
  background: var(--accent);
  color: #000;
  font-weight: bold;
}

.primary-btn:hover {
  background: #ff7a33;
  box-shadow: var(--accent-glow);
}

/* Session List */
.session-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 300px;
  overflow-y: auto;
}

.session-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  border: 1px solid rgba(255,102,0,0.3);
  border-radius: 6px;
  background: rgba(255,102,0,0.05);
  transition: all 0.2s;
}

.session-item:hover {
  border-color: var(--accent);
  background: rgba(255,102,0,0.1);
}

.session-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.session-info strong {
  color: var(--text-main);
  font-size: 0.95rem;
}

.session-info small {
  color: var(--text-fade);
  font-size: 0.75rem;
}

.session-delete-btn {
  background: transparent;
  border: 1px solid rgba(255,102,0,0.5);
  color: var(--accent);
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.2s;
}

.session-delete-btn:hover {
  background: rgba(255,0,0,0.2);
  border-color: #ff3333;
  color: #ff3333;
  box-shadow: 0 0 8px rgba(255,0,0,0.3);
}

/* Thinking Stream Panel */
.thinking-panel {
  border-top: 1px solid var(--accent);
  background: rgba(255, 102, 0, 0.02);
  display: flex;
  flex-direction: column;
  transition: max-height 0.3s ease;
  max-height: 300px;
}

.thinking-panel.collapsed {
  max-height: 40px;
}

.thinking-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  background: rgba(255, 102, 0, 0.08);
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid rgba(255, 102, 0, 0.2);
  font-size: 0.9rem;
  font-weight: 500;
}

.thinking-header:hover {
  background: rgba(255, 102, 0, 0.12);
}

.thinking-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.thinking-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #666;
  display: inline-block;
}

.thinking-status-dot.connected {
  background: #00ff66;
  box-shadow: 0 0 8px #00ff66;
}

.thinking-status-dot.disconnected {
  background: #ff3333;
}

.thinking-clear-btn,
.thinking-toggle-btn {
  background: transparent;
  border: 1px solid rgba(255, 102, 0, 0.5);
  color: var(--text-main);
  padding: 4px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
}

.thinking-clear-btn:hover,
.thinking-toggle-btn:hover {
  background: rgba(255, 102, 0, 0.2);
  box-shadow: 0 0 6px rgba(255, 102, 0, 0.3);
}

.thinking-toggle-btn {
  transition: transform 0.3s ease;
}

.thinking-panel.collapsed .thinking-toggle-btn {
  transform: rotate(-90deg);
}

.thinking-content {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
}

.thinking-panel.collapsed .thinking-content {
  display: none;
}

.thinking-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-fade);
  font-size: 0.85rem;
}

.thinking-empty-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}

.thinking-event {
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-family: 'Courier New', monospace;
  animation: thinkingSlideIn 0.3s ease-out;
  border-left: 3px solid;
  word-wrap: break-word;
}

@keyframes thinkingSlideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.thinking-event-connected {
  background: rgba(0, 255, 102, 0.1);
  border-color: #00ff66;
  color: #00ff66;
}

.thinking-event-thinking {
  background: rgba(138, 43, 226, 0.1);
  border-color: #8a2be2;
  color: #c79cff;
}

.thinking-event-tool_call {
  background: rgba(255, 165, 0, 0.1);
  border-color: #ffa500;
  color: #ffb84d;
}

.thinking-event-tool_result {
  background: rgba(0, 191, 255, 0.1);
  border-color: #00bfff;
  color: #7dd3fc;
}

.thinking-event-done {
  background: rgba(168, 85, 247, 0.1);
  border-color: #a855f7;
  color: #e9d5ff;
  font-weight: bold;
}

.thinking-event-error {
  background: rgba(255, 51, 51, 0.1);
  border-color: #ff3333;
  color: #fca5a5;
}

.thinking-event-icon {
  display: inline-block;
  margin-right: 8px;
}

.thinking-event-details {
  font-size: 0.75rem;
  color: var(--text-fade);
  margin-top: 4px;
  padding-left: 20px;
  white-space: pre-wrap;
  max-height: 100px;
  overflow-y: auto;
}

/* ========== MOBILE RESPONSIVE STYLES ========== */

/* Hamburger Menu */
.hamburger-menu {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
  padding: 8px;
  border: 1px solid var(--accent);
  border-radius: 4px;
  background: transparent;
  z-index: 100;
}

.hamburger-menu span {
  width: 20px;
  height: 2px;
  background: var(--accent);
  transition: all 0.3s;
  display: block;
}

.hamburger-menu.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-menu.active span:nth-child(2) {
  opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu Container */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: -100%;
  width: 280px;
  height: 100vh;
  background: var(--bg-dark);
  border-right: 2px solid var(--accent);
  box-shadow: var(--accent-glow);
  z-index: 999;
  transition: left 0.3s ease;
  overflow-y: auto;
  padding: 20px;
  flex-direction: column;
  gap: 16px;
}

.mobile-menu.open {
  left: 0;
}

.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 998;
}

.mobile-menu-overlay.show {
  display: block;
}

.mobile-menu-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 102, 0, 0.3);
}

.mobile-menu-section:last-child {
  border-bottom: none;
}

.mobile-menu-section h4 {
  margin: 0;
  color: var(--accent);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.mobile-menu button,
.mobile-menu select {
  width: 100%;
  padding: 10px;
  font-size: 0.95rem;
  text-align: left;
}

/* Mobile Breakpoints */
@media screen and (max-width: 768px) {
  body {
    padding: 0;
  }

  #chat {
    width: 100%;
    max-width: 100%;
    height: 100vh;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  /* Show hamburger, hide desktop header controls */
  .hamburger-menu {
    display: flex;
  }

  #model-select {
    padding: 12px;
    justify-content: space-between;
  }

  /* Hide all controls except hamburger on mobile */
  #model-select > *:not(.hamburger-menu) {
    display: none;
  }

  #session-select {
    display: none;
  }

  /* Show mobile menu */
  .mobile-menu {
    display: flex;
  }

  /* Messages - more width on mobile */
  .msg {
    max-width: 90%;
    font-size: 0.95rem;
  }

  /* Status bar */
  #status {
    padding: 10px 12px;
    font-size: 0.85rem;
  }

  /* Input area - bigger touch targets */
  #input {
    padding: 12px;
  }

  #userInput {
    font-size: 16px; /* Prevents zoom on iOS */
    padding: 12px;
  }

  #sendBtn {
    padding: 12px 16px;
    font-size: 1rem;
  }

  /* Modal - full width on mobile */
  .modal-content {
    width: 95%;
    min-width: unset;
    max-width: unset;
    max-height: 90vh;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }

  .modal-header {
    padding: 12px 16px;
  }

  .modal-body {
    padding: 16px;
  }

  .modal-footer {
    padding: 12px 16px;
    flex-wrap: wrap;
  }

  .modal-footer button {
    flex: 1;
    min-width: 120px;
  }

  /* Radio labels - stack better on mobile */
  .radio-label {
    padding: 10px;
  }

  .radio-label small {
    margin-left: 20px;
    font-size: 0.75rem;
  }

  /* Session list */
  .session-item {
    padding: 10px;
  }

  .session-info strong {
    font-size: 0.9rem;
  }

  .session-info small {
    font-size: 0.7rem;
  }

  /* Settings button in header */
  #settingsBtn {
    padding: 8px 12px;
  }

  /* Thinking panel adjustments for mobile */
  .thinking-panel {
    max-height: 250px;
  }

  .thinking-panel.collapsed {
    max-height: 38px;
  }

  .thinking-header {
    padding: 8px 10px;
    font-size: 0.85rem;
  }

  .thinking-event {
    font-size: 0.8rem;
    padding: 6px 10px;
  }

  .thinking-event-details {
    font-size: 0.7rem;
    max-height: 80px;
  }
}

/* Extra small devices (phones in portrait) */
@media screen and (max-width: 480px) {
  .mobile-menu {
    width: 240px;
  }

  .msg {
    max-width: 95%;
    font-size: 0.9rem;
    padding: 8px 12px;
  }

  #userInput {
    font-size: 16px;
    padding: 10px;
  }

  #sendBtn {
    padding: 10px 14px;
    font-size: 0.95rem;
  }

  .modal-header h3 {
    font-size: 1.1rem;
  }

  .settings-section h4 {
    font-size: 0.95rem;
  }

  .radio-label span {
    font-size: 0.9rem;
  }
}

/* Tablet landscape and desktop */
@media screen and (min-width: 769px) {
  /* Ensure mobile menu is hidden on desktop */
  .mobile-menu,
  .mobile-menu-overlay {
    display: none !important;
  }

  .hamburger-menu {
    display: none !important;
  }
}